Java || Snippet – How To Do Simple Math Using Integer Arrays

Print Friendly, PDF & Email

This page will consist of simple programs which demonstrate the process of doing simple math with numbers that are stored in an integer array.

REQUIRED KNOWLEDGE FOR THIS SNIPPET

Integer Arrays
The "Random" Class
For Loops
Assignment Operators - Simple Math Operations
Custom Setw/Setfill In Java

Note: In all of the examples on this page, a random number generator was used to place numbers into the array. If you do not know how to obtain data from the user, or if you do not know how to insert data into an array, click here for a demonstration.

===== ADDITION =====

The first code snippet will demonstrate how to add numbers together which are stored in an integer array. This example uses the “+=” assignment operator.


QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

SAMPLE OUTPUT

Welcome to My Programming Notes' Java Program.

Original array values:
22 26 41 89 35 90 15 99 85 5 95 86
--------------------------------------------------
The sum of the items in the array is: 688

===== SUBTRACTION =====

The second code snippet will demonstrate how to subtract numbers which are stored in an integer array. This example uses the “-=” assignment operator.


QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

SAMPLE OUTPUT

Welcome to My Programming Notes' Java Program.

Original array values:
99 92 91 26 1 52 98 62 51 22 64 65
--------------------------------------------------
The difference of the items in the array is: -723

===== MULTIPLICATION =====

The third code snippet will demonstrate how to multiply numbers which are stored in an integer array. This example uses the “*=” assignment operator.


QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

SAMPLE OUTPUT

Welcome to My Programming Notes' Java Program.

Original array values:
95 63 32 19 93 83 71 35 32 37 66 95
--------------------------------------------------
The product of the items in the array is: 494770176

===== DIVISION =====

The fourth code snippet will demonstrate how to divide numbers which are stored in an integer array. This example uses the “/=” assignment operator.


QUICK NOTES:
The highlighted lines are sections of interest to look out for.

The code is heavily commented, so no further insight is necessary. If you have any questions, feel free to leave a comment below.

SAMPLE OUTPUT

Welcome to My Programming Notes' Java Program.

Original array values:
28 85 90 52 1 64 93 85 4 22 4 28
--------------------------------------------------
The quotient of the items in the array is: 1.8005063061510687E-17

Leave a Reply